Oswego, NY – Oswego, Jefferson and Lewis counties now are under a winter storm warning after the National Weather Service boosted its snow forecast for the area.

The eastern Lake Ontario region now is expected to get 4 to 7 inches of snow today and another 3 to 6 inches overnight, the weather service’s Buffalo office said shortly before 10 a.m.

West winds between 20 mph and 30 mph, with gusts up to 45 mph, are expected and temperatures are expected to dive from around 30 degrees during the day to between 5 and 10 degrees overnight. Blowing and drifting snow is expected to make driving difficult.

The warning extends until 4 a.m. Saturday.

A winter weather advisory calling for less snow remains in effect in Onondaga, Cayuga, Madison and Oneida counties.